M-Class (W166) Produced 2012-2015

Headlights too dim, how to improve?

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Old 12-12-2014, 01:16 PM
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Manual has the info. Pull the panel in front of the tire then unscrew the bulb out. Doesn't seem bad at all.
Old 12-12-2014, 01:19 PM
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Originally Posted by vpr80
Manual has the info. Pull the panel in front of the tire then unscrew the bulb out. Doesn't seem bad at all.

Thanks, I'll check it out.
Old 09-27-2016, 03:06 PM
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OP, what was the verdict? and what did you end up doing?
Old 09-27-2016, 03:19 PM
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I installed the Osram Night Breaker H7 main bulbs and it improved the light 100%. Not the best, but good enough to stop there without spending a fortune. Also I hate the small yellow daytime running lights so I replaced those little ones with W5W 4k LEDs which look 1000x better.

I forget which but one of the sets either need to be the fancy CANBUS error-free kind or get "Philips Vision LED CAN-bus Warning Canceller". I got the warning canceller and it removed the light out warning. Think it was the little lights that needed it.
Old 09-27-2016, 04:48 PM
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Originally Posted by vpr80
I installed the Osram Night Breaker H7 main bulbs and it improved the light 100%. Not the best, but good enough to stop there without spending a fortune. Also I hate the small yellow daytime running lights so I replaced those little ones with W5W 4k LEDs which look 1000x better.

I forget which but one of the sets either need to be the fancy CANBUS error-free kind or get "Philips Vision LED CAN-bus Warning Canceller". I got the warning canceller and it removed the light out warning. Think it was the little lights that needed it.
cool, do the night breakers look like xenons/have a blueish tint? any pics with lights on?

Last edited by topsider; 09-27-2016 at 04:54 PM.
Old 09-27-2016, 05:10 PM
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Originally Posted by topsider
cool, do the night breakers look like xenons/have a blueish tint? any pics with lights on?
ehhhh so so. Not really like xenon but def while vs yellow
Old 09-28-2016, 09:27 AM
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Originally Posted by 350MH83
+1. These headlights are by far the best I have been given to drive. Very bright, very white, and I love the way they adapt to the conditions. My only complaint would be that they can be blinding to people coming in front.


Comparing our ML with Xenon lighting package to our old X3, Lexus RX450h and Q5, the ML's light is pretty weak.
Old 10-02-2016, 03:29 AM
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only way to improve =>
Old 10-04-2016, 06:16 PM
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https://mbworld.org/forums/gle-class...d-success.html Just fyi, I have the HID canbus system on my GLE350, just did it, and it works well. A few others have had success on both the GLE and ML350. I've only tested it with morimoto ballasts and bulbs from theretrofitsource.com

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